Cqntainer



'J. G. HODGSON.

CONTAINER.

APPLICATION FILED SEPT. I4. 1914- RENEWED JAN. 24. I920.

Patented Mar-.12, 1920.

UNITED sT 'rEs PngENT OFFICE.

JOHN G. HODGSON, OF MAYWOOD, ILLINOIS, ASSIGNOR TO AMERICAN CAN COMPANY,

. OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

CONTAINER.

Specification of Letters Patent.

Application filed Septemberf14, 1914, SeriaiNu. 861,534. Renewed January24, 1929. Serial No. 353,812.

\ To all whom it may concern:

Be it known that I,JoHN G. Honesou, a citizen of the United States,residin in Maywood, in the county of Cook and tate' of Illinois, haveinvented a new and useful Improvement in Containers, of which thefollowing is a specification.

My invention relates to the manufacture and use of containers and-thelike and more particularly to the manufacture and use of sheet metalcontainers in the canning in-' germs and ferments.

It has frequently been the custom prior to my invention to permanentlyclose the cans either by seaming or by plugging vents immediately uponthe termination of the cooking step and to then lacquer the seamofclosed vents while the can is still extremely hot and before anycontraction of the material takes place. This process has been foundefficient when used in canning foodstuffs wherein the period ofheatingor cooking need not be accuratelydetermined and observed. In thecanning of-peas and other vegetables, however, where the quality of thecooked product depends in great degree (upon the sudden cooling of thecan and consequent termination of the cooking step, the method has notbeen found so satisfactory.

In cooking peas and the likeit is the custom to immerse the cans in coolor cold water as soon as they are received from the cooking chamber,insuflicient time being given to apply the coating of lacquer.

It is a purpose of this invention to pro- "vide means for hermeticallysealing the can during the cooking or processing operation so that itwill not be necessary to wait until after the can has come from thecookingv chamber. g

It is a principal object of the present invention to provide an improvedhermetic seal which automatically applies itself during the processingof a container or can.

A further object of the invention is the provision of a containerprovided with means for forming a hermetic seal between its body andclosure or end, whichiwill require no manipulation by the packer orcanner other than scanning the container in the ordinary manner.

Other objects and advantages of theinvention will be apparent as it isbetter understood from the following description when considered inconnection with the accompany ing drawing illustrating a preferredembodiment thereof.

Referring to the drawing,

Figure 1 shows a can or container embodying my invention andhermetically sealed;

Fig. 2 is a side elevation of a can body embodying my invention Fig. 3is a transverse section of an end or closure for the same; and v Fig. 4is a partial transverse sectional view showing the closure and an end ofthe body seamed together.

For the purpose of illustrating my invention I have shown it embodied ina can of an ordinary and well known type in which the ends and body arejoined by a double seam.

The can body 5 in the present instance is provided with outwardlyextending flanged end edges 6 of the ordinary type adapted to be turnedover, aS seen in Fig. 4, in forming the double seam. On the under sideof these flanges and extending longitudinally of the body is painted orotherwise provided a film or coating 7 of some gummy material adapted toexpand and soften under heat. The extent of this film or coating ispreferably such that When the seam is formed the coating will terminateat or about the seam, as seen at 8 in Fig. 4. The cover or end 9 in thepresent instance is provided with an outwardly extending flange 1Oturned down slightly at its edges 11 in the ordinary manmanifest, as theinvention is better under-.

stood, that either the film 7 or the film 13 Patented Mar. 2, 1920.

may be omitted. Films 7 and 13, after being placed on the can, arepermittedto dry and they form little more than a coat of lacquer of theordinary thickness in their dried condition. When the can is seamed itwill be noted that the coating 7 on the can body is brought Opposite theadjacent surfaces, of the cover and the coating 13, if used, is broughtopposite the adjacent surface of the can body. These coatings areprovided and are substantially, dried before the ends are secured to thebody and they may be provided, if desired,'on the blanks before the endsor body are formed. When the can has been seamed and is hot fromprocessing or. in processing, the lacquer softens and 1 swells andformsa film adhering to the adend to the can body at the can factory andjac'ent surfaces of the body and cover to form a hermetic seal.

In practice it 1s customary to secure one to supply the other end'freeof the can to subsequently be positioned and attachedby A as the packeror canner.

Where cans are provided embodying my invention one end may-be completelysealed in the manner described and the can furnished'with a lacquercoating or film at the other end of the canbody or on the outersurfaceof the otherend closure or both, it onlybeing. necessary for thecanner or packer to fill the can with its contents and process itin theusual manner, the resulting product being hermetically sealed withoutthe necessity of subsequently lacquering the can in the manner earlierdescribed. A can embodying my invention filled and sealed in propermanner will hide completely the lacquer film and an article morepleasing in appearanceis thereby produced than is possible where thelacquer is painted over the seamed edge after processing.

It is thought that the invention and many of its attendantadvantages-will be understood fromthe foregoing description, and it willbe apparent that various changes may be made inthe form, constructionand ar- 'rangement of the parts without departing from the spiritandscope of the invention or sacrificing any .of its materialadvantages, the form herein described being .merely a preferredembodiment thereof.

I do not claim herein the method which is described, thesame being thesubject of my application Serial No. 88,503, filed April 3-,- .1916.

I claim: 5

LA flanged container body provided on' the underside of its flange witha dried film of gummy material, and also provided on its vertical sidesadjacent said flange with a dried film of said material; and a flangedcover provided with a packing material on the under side of the-flange,and

also provided with a dried film of said gummy material on that portionof the top of its flange which is brought into contact with the saidfilm of gummy material "on the vertical sides of the can when the coveris double seamed to thecan.

, 2. A container body provided adjacent its end edges with a dried filmof gummy material adapted to expand under heat and to adhere to theedges of a closure subsequently fixed in place. and to form a hermeticseal therewith, said film extending over the outer surface of thevertical portion of said body adapted to contact with said cover.

3. A container comprising a body and an end closure" having adjoiningedges adapted to be seamed together, a dried film of gummy material on avertical portion of the body which contacts with the cover in s'eaming,said film being expandible under heat to be seamed together, and driedfilms of gummy material on both of the opposed portions of said body andcover which contact in seaming, said films being expandible under heatand adapted to adhere together to form a hermetic seal.

6. A container comprising a body and an end closure having adjoiningedges adapted to be secured together, and a coatin of lacquer onavertical portion of the which contacts with the cover in seaming.

7. A flanged can body for a double seam closure, the same being providedon its vertical sides, which are not bent into the double seam butvwhich are engaged by the 4 top parts of the cover when the double seamis formed, with a dried film of gummy seal;

ing materiaL. n

8. A flanged can cover for a double seam vclosure, the same beingprovided on its top side near its edge, with a dried film of gummysealing material which is adapted to be brought into tight contact withthe vertical sides of the can, when the double seam is formed.

Signed this 25th day of August,- 1914, in the presence of two witnesses.4 JOHN G. HODGSON'.

Witnesses:

" THOMAS J. OBRIEN, J. C. CARPENTER.

